GB1441043A - Process for the production of iron oxide - Google Patents
Process for the production of iron oxideInfo
- Publication number
- GB1441043A GB1441043A GB788174A GB788174A GB1441043A GB 1441043 A GB1441043 A GB 1441043A GB 788174 A GB788174 A GB 788174A GB 788174 A GB788174 A GB 788174A GB 1441043 A GB1441043 A GB 1441043A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stage
- iron oxide
- precipitate
- oxidized
- black iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title abstract 4
- 238000004519 manufacturing process Methods 0.000 title abstract 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title 2
- 239000002244 precipitate Substances 0.000 abstract 5
- WTFXARWRTYJXII-UHFFFAOYSA-N iron(2+);iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+2].[Fe+3].[Fe+3] WTFXARWRTYJXII-UHFFFAOYSA-N 0.000 abstract 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 abstract 4
- 239000003795 chemical substances by application Substances 0.000 abstract 3
- 230000003647 oxidation Effects 0.000 abstract 3
- 238000007254 oxidation reaction Methods 0.000 abstract 3
- 239000000243 solution Substances 0.000 abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 230000003472 neutralizing effect Effects 0.000 abstract 2
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 2
- 239000000725 suspension Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 229910010413 TiO 2 Inorganic materials 0.000 abstract 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000007900 aqueous suspension Substances 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 239000001034 iron oxide pigment Substances 0.000 abstract 1
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 abstract 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 abstract 1
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000000049 pigment Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/08—Ferroso-ferric oxide [Fe3O4]
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Iron (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
1441043 Black iron oxide LAPORTE INDUSTRIES Ltd 10 Feb 1975 [21 Feb 1974] 7881/74 Heading C1A A process for the production of a black iron oxide pigment having a blue undertone comprises two or more stages, each comprising firstly treating an aqueous solution of FeSO 4 with a neutralizing agent to form a precipitate and secondly oxidizing the precipitate in suspension with an oxygen-containing gas to black iron oxide, wherein the precipitate in the second and in any succeeding stage is formed and oxidized in the presence of the oxidized precipitate(s) from the proceeding stage(s), the oxidation being conducted at above 50‹ C. if the pH of the suspension being oxidized is 2-5. The sulphate starting material is suitably copperas, preferably derived from the sulphate process for the production of TiO 2 . The starting solution may contain 10-60 g./l. Fe<SP>+2</SP>. The neutralizing agent used in each stage is preferably NH 3 of aqueous NH 4 OH but alkali metal hydroxides may also be used. The agent is preferably used in amounts of 100-120% of that stoichiometrically required. Additional FeSO 4 in the form of a solid or a concentrated solution may be added to the water phase containing the black iron oxide as formed by oxidation in the preceding stage. If desired, only a portion of the Fe content of the initial solution is precipitated in the first stage and the remainder may then be precipitated in one of the subsequent stages. Neutralization is preferably performed at 50-90‹ C. and the oxidation stage is suitably performed at 50- 95‹ C. by passing the gas, e.g. air upwardly through the aqueous suspension for 1-4 hours. Preferably the process consists of 3-7 stages. The combined oxidized precipitates may be recovered by filtration and are then washed with water until free of SO 4 <SP>2-</SP> ions and are then dried at 50-120‹ C. or spray dried and then milled to produce a pigment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB788174A GB1441043A (en) | 1974-02-21 | 1974-02-21 | Process for the production of iron oxide |
| AU78144/75A AU480526B2 (en) | 1974-02-21 | 1975-02-12 | Process forthe production of iron oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB788174A GB1441043A (en) | 1974-02-21 | 1974-02-21 | Process for the production of iron oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1441043A true GB1441043A (en) | 1976-06-30 |
Family
ID=9841587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB788174A Expired GB1441043A (en) | 1974-02-21 | 1974-02-21 | Process for the production of iron oxide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1441043A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261486A (en) * | 2014-09-19 | 2015-01-07 | 上海一品颜料有限公司 | Method for controlling content of iron of black iron oxide |
| CN105439211A (en) * | 2015-12-17 | 2016-03-30 | 江苏省常熟环通实业有限公司 | Energy-saving environmental-protection production method for iron oxide black pigment |
| CN113772741A (en) * | 2021-09-06 | 2021-12-10 | 江苏宇星科技有限公司 | Method for producing iron oxide black by liquid phase synthesis |
-
1974
- 1974-02-21 GB GB788174A patent/GB1441043A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261486A (en) * | 2014-09-19 | 2015-01-07 | 上海一品颜料有限公司 | Method for controlling content of iron of black iron oxide |
| CN105439211A (en) * | 2015-12-17 | 2016-03-30 | 江苏省常熟环通实业有限公司 | Energy-saving environmental-protection production method for iron oxide black pigment |
| CN113772741A (en) * | 2021-09-06 | 2021-12-10 | 江苏宇星科技有限公司 | Method for producing iron oxide black by liquid phase synthesis |
Also Published As
| Publication number | Publication date |
|---|---|
| AU7814475A (en) | 1976-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |